Experiment table with variable table top range

Abstract

The invention provides an experiment table with a variable table top range. The experiment table comprises an annular table body, a central table body, a bottom table body and a supporting column assembly. A plurality of annular table bodies are sequentially nested from inside to outside and from small to large, a central table body is connected in the first layer of annular table body, the table surfaces of the annular table bodies and the table surface of the central table body jointly form an experiment table surface, a bottom table body is arranged below the central table body, a supporting column assembly is arranged in the bottom table body, and a supporting column is arranged at the top of the supporting column assembly; one or more annular table bodies are supported by lifting the supporting columns, so that the table surfaces of the supported annular table bodies are flush with the table surface of the central table body, and the range of the experiment table surface is changed. The holes correspond to the supporting columns of the supporting column assembly according to a certain position relation, the supporting column assembly supports different annular table bodies from inside to outside in sequence through rotation and lifting, and the table top range of the experiment table is changed.

Description

Technical Field

[0001] The invention relates to the field of test devices, in particular to a test bench with a variable table range. Background Art

[0002] A laboratory bench is a kind of laboratory equipment used to perform various experimental operations and provide a convenient, clean and safe experimental environment. Laboratory benches are usually made of different types of materials. The design of the laboratory bench has many advantages, such as durability, high quality, firmness, safety, corrosion resistance, etc. Laboratory benches are widely used in experimental operations in scientific fields such as biology, chemistry, geology, etc., and are also used in medical, food processing, pharmaceutical and other fields.

[0003] In the prior art, the tabletop range of the laboratory bench is often fixed and difficult to change. Different experiments have different requirements for the tabletop range, so laboratory benches with different tabletop ranges need to be used. In one experiment, if tables of different sizes are used at the same time, multiple laboratory benches are required, which brings inconvenience to the experimenters.

[0004] Therefore, there is a need for a test bench with a variable table range to solve the above problems. Summary of the invention

[0005] In view of the defect that the size of the table top of the experimental table in the prior art is fixed, the present invention provides an experimental table with a variable table top range, so that the size of the table top range of the experimental table can be changed.

[0006] The specific technical solutions are as follows:

[0007] A test bench with a variable table range, comprising: a ring-shaped table body, a central table body, a bottom table body and a support column assembly;

[0008] The plurality of annular platforms are nested in sequence from inside to outside and from small to large. The first layer of annular platforms is connected to the central platform. The table tops of the annular platforms and the table tops of the central platforms together form a laboratory table. The bottom platform is provided under the central platform. The support column assembly is provided in the bottom platform. A support column is provided on the top of the support column assembly.

[0009] By lifting and lowering the support column, one or more of the annular platforms are supported, so that the table surface of the supported annular platform is flush with the table surface of the central platform, thereby changing the range of the experimental table surface.

[0010] In a specific embodiment, each of the annular platforms has a hole at the bottom, and the support column assembly is correspondingly provided with the support column;

[0011] The number of holes of each annular platform increases linearly from the inside to the outside, and all the holes form a plurality of fan-shaped hole groups, and the hole groups are rotationally symmetrically distributed with the center of the annular platform as the rotation center;

[0012] The support columns of the support column assembly are provided with support column groups corresponding to the hole groups, and the number of support columns in each support column group is the same as the number of the annular platform body;

[0013] The support columns are arranged corresponding to the position distribution of the holes; the support columns support one or more of the annular platforms through rotation and lifting to change the range of the experimental table.

[0014] In a specific embodiment, the holes are radially distributed along the inscribed circle of the annular platform, and the number of the holes on the same radial line periodically decreases linearly from more to less or increases linearly from less to more along the circumferential direction.

[0015] In a specific embodiment, the circumferential angles between two adjacent support column groups are the same, and the circumferential angles between two adjacent hole groups are the same.

[0016] In a specific embodiment, the heights of the annular platforms are the same, and the tops of the support columns are flush and the same.

[0017] In a specific embodiment, the height of the central platform is higher than the height of the annular platform, and the rising height of the support column is not higher than the depth of the hole.

[0018] In a specific embodiment, the support column assembly includes a power device, and the power device includes a curved rotation mechanism and a linear transmission mechanism;

[0019] The curved rotation mechanism is used to drive the support column to rotate, and the linear transmission mechanism is used to drive the support column to vertically lift.

[0020] In a specific embodiment, slots are further provided on the surface of the bottom platform, and the slots are evenly distributed along the circumference of the surface of the bottom platform. The slots are used for the support columns to pass through the surface of the bottom platform.

[0021] In a specific embodiment, the curved rotation mechanism includes a rotary motor; the linear transmission mechanism includes a cylinder or a telescopic hydraulic cylinder or an electric push rod.

[0022] In a specific embodiment, a positioning component is further provided on the bottom platform, and the positioning component is used to locate the initial position of the annular platform;

[0023] The positioning assembly includes a pin / pin hole arranged on the surface of the bottom platform, and a pin hole / pin arranged on each of the annular platforms corresponding to the pin / pin hole, and the pin / pin hole is symmetrically distributed along the diameter of the inscribed circle of the bottom platform.

[0024] Beneficial effects:

[0025] The present invention provides an experimental table with a variable tabletop range, which is provided with an annular table body, a bottom table body and a support column assembly; holes are provided at the bottom of the annular table body, and the holes are distributed according to a certain positional relationship. When the support column assembly is rotated to different angles in sequence, different annular table bodies are lifted up in sequence from the inside to the outside by the support columns, so as to change the tabletop range of the experimental table, so that the same experimental tabletop can be changed to meet the actual needs of the experiment. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 An exploded view of the overall structure of the test bench provided in an embodiment of the present invention;

[0028] Figure 2 A cross-sectional view of a test bench according to an embodiment of the present invention;

[0029] Figure 3 A top view of a test bench according to an embodiment of the present invention;

[0030] Figure 4 A three-dimensional diagram of the overall structure of the experimental table in the minimum area state proposed by an embodiment of the present invention;

[0031] Figure 5 A three-dimensional diagram of the overall structure of the experimental platform in the maximum area state proposed by an embodiment of the present invention;

[0032] Figure 6 A structural view of the middle part of the experimental platform provided in an embodiment of the present invention;

[0033] Figure 7 A bottom platform structure view of the experimental table proposed in an embodiment of the present invention;

[0034] Figure 8 A schematic diagram of the support column structure of the experimental platform proposed in an embodiment of the present invention;

[0035] Fig. 9A three-dimensional diagram of the overall structure of the experimental platform provided in the third embodiment of the present invention;

[0036] Fig.10 This is a structural view of the middle part of the experimental platform proposed in the third embodiment of the present invention;

[0037] Fig.11 This is a top view of the experimental platform proposed in Example 3 of the present invention.

[0038] Reference numerals:

[0039] 1-bottom platform; 101-center platform; 2-middle platform; 21-annular platform; 201-first annular platform; 202-second annular platform; 203-third annular platform; 204-fourth annular platform; 205-fifth annular platform; 3-support column assembly; 31-support column group; 311-support column; 312-slot hole; 301-curved rotation mechanism; 302-linear transmission mechanism; 4-hole group; 41-hole line; 401-hole; 51-pin; 52-pin hole. DETAILED DESCRIPTION

[0040] In the following, various embodiments of the present disclosure will be described more fully. The present disclosure may have various embodiments, and adjustments and changes may be made therein. However, it should be understood that there is no intention to limit the various embodiments of the present disclosure to the specific embodiments disclosed herein, but rather the present disclosure should be understood to cover all adjustments, equivalents and / or alternatives that fall within the spirit and scope of the various embodiments of the present disclosure.

[0041] Hereinafter, the terms "include" or "may include" used in various embodiments of the present disclosure indicate the presence of disclosed functions, operations, or elements, and do not limit the addition of one or more functions, operations, or elements. In addition, as used in various embodiments of the present disclosure, the terms "include", "have", and their cognates are intended only to indicate specific features, numbers, steps, operations, elements, components, or a combination of the foregoing, and should not be understood as first excluding the presence of one or more other features, numbers, steps, operations, elements, components, or a combination of the foregoing or the possibility of adding one or more features, numbers, steps, operations, elements, components, or a combination of the foregoing.

[0042] In various embodiments of the present disclosure, the expression "or" or "at least one of A or / and B" includes any combination or all combinations of the words listed at the same time. For example, the expression "A or B" or "at least one of A or / and B" may include A, may include B, or may include both A and B.

[0043] The expressions (such as "first", "second", etc.) used in the various embodiments of the present disclosure may modify the various constituent elements in the various embodiments, but may not limit the corresponding constituent elements. For example, the above expressions do not limit the order and / or importance of the elements. The above expressions are only used for the purpose of distinguishing one element from other elements. For example, the first user device and the second user device indicate different user devices, although both are user devices. For example, without departing from the scope of the various embodiments of the present disclosure, the first element may be referred to as the second element, and similarly, the second element may also be referred to as the first element.

[0044] It should be noted that if it is described that one component element is “connected” to another component element, the first component element may be directly connected to the second component element, and a third component element may be “connected” between the first component element and the second component element. Conversely, when one component element is “directly connected” to another component element, it can be understood that there is no third component element between the first component element and the second component element.

[0045] The term “user” used in various embodiments of the present disclosure may indicate a person using an electronic device or a device (eg, an artificial intelligence electronic device) using the electronic device.

[0046] The terms used in the various embodiments of the present disclosure are only used for the purpose of describing specific embodiments and are not intended to limit the various embodiments of the present disclosure. As used herein, the singular form is intended to also include the plural form, unless the context clearly indicates otherwise. Unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as the meanings commonly understood by ordinary technicians in the field to which the various embodiments of the present disclosure belong. The terms (such as the terms defined in the generally used dictionary) will be interpreted as having the same meaning as the contextual meaning in the relevant technical field and will not be interpreted as having an idealized meaning or an overly formal meaning, unless clearly defined in the various embodiments of the present disclosure.

[0047] Example 1

[0048] A laboratory bench with a variable table range, such as Figure 1 As shown, it comprises: a bottom platform 1, a hollow middle platform 2 composed of a plurality of groups of concentrically arranged annular platforms 21, and a rotatable and liftable support column assembly 3;

[0049] Multiple annular platforms 21 are nested in sequence from inside to outside and from small to large. The first layer of annular platforms 21 are concentrically sleeved with a central platform 101. A bottom platform 1 is provided under the central platform 101. A support column assembly 3 is provided inside the bottom platform 1. A support column 311 is provided at the top of the support column assembly 3. Multiple linear transmission mechanisms 301 are provided under the support column 311. Different linear transmission mechanisms 301 are used to control the vertical lifting movement of different support columns 311. Different support columns correspond to different annular platforms 21.

[0050] According to the use requirements, multiple motors are used to control different support columns 311 to support one or more annular platforms 21, and the table tops of the annular platforms 21 and the table tops of the central platform 101 together form the experimental table top, so that the table top area can be variable.

[0051] However, this embodiment still has the problems of high manufacturing cost and complex structure leading to unstable structure.

[0052] Example 2

[0053] like Figure 1 As shown, a test bench with a variable table range comprises: a bottom table body 1, a hollow middle table body 2 composed of a plurality of groups of concentrically arranged annular table bodies 21, and a rotatable and liftable support column assembly 3;

[0054] Specifically, in this embodiment, the platform surfaces of the bottom platform 1, the middle platform 2, and the annular platform 21 are all circular, and there is no restriction on the specific shape of the platform surface; it is designed according to actual use needs;

[0055] like Figure 1 , Figure 3 as well as Figure 5 As shown, multiple annular platforms 21 are nested in sequence from inside to outside and from small to large. The annular platforms 21 of the first layer are concentrically sleeved with the central platform 101. The table tops of the annular platforms 21 and the table tops of the central platform 101 together form a test table top.

[0056] like Figure 1 , Figure 7 As shown, a bottom platform 1 is provided under the central platform 101, and a support column assembly 3 is provided inside the bottom platform 1;

[0057] The design of the central platform 101 helps to fix the middle platform 2, making the overall structure more stable, and plays a role in limiting and guiding the up and down movement of the middle platform 2;

[0058] Specifically, Figure 3As shown, in this embodiment, the middle platform 2 includes a first annular platform 201, a second annular platform 202, a third annular platform 203, a fourth annular platform 204, and a fifth annular platform 205. The annular platforms 21 are arranged concentrically and are sequentially sleeved from small to large and from inside to outside.

[0059] Specifically, in this embodiment, the first annular platform 201 has an inner and outer diameter of 10-12 cm and is concentrically sleeved with the central platform 101; the second annular platform 202 has an inner and outer diameter of 12-14 cm, and the second annular platform 202 is concentrically sleeved with the first annular platform 201; the third annular platform 203 has an inner and outer diameter of 14-16 cm, and the third annular platform 203 is concentrically sleeved with the second annular platform 202; the fourth annular platform 204 has an inner and outer diameter of 16-18 cm, and the fourth annular platform 204 is concentrically sleeved with the third annular platform 203; the fifth annular platform 205 has an inner and outer diameter of 18-20 cm, and the fifth annular platform 205 is concentrically sleeved with the fourth annular platform 204; thereby, the change of the table area / diameter can be achieved;

[0060] There is no limitation on the specific number of the annular platforms 21 and the sizes of the inner and outer diameters.

[0061] Specifically, in this embodiment, the diameter of the central platform 101 is 10 cm. The diameter of the central platform 101 can be designed according to actual needs, and there is no limitation on the specific diameter of the central platform 101.

[0062] The middle platform 2 is sleeved with the central platform 101 so as to be movable up and down along the direction of the central platform 101, and the middle platform 2 is movably arranged on the bottom platform 1;

[0063] Furthermore, each annular table 21 is provided with a hole 401 at the bottom, and all the holes 401 are arranged in a regular periodic pattern. The support column assembly 3 is provided with a support column 311, and the support column 311 is arranged corresponding to the position distribution of the holes 401; the support column assembly 3 is used to support different annular tables 21 from the inside to the outside in sequence through rotation and lifting, so that they are flush with the table surface of the central table 101, thereby changing the range of the experimental table surface.

[0064] Furthermore, holes 401 are provided at the bottom of each annular platform 21; and the number of holes 401 of each annular platform 21 increases gradually from near to far as the distance between each annular platform 21 and the center of the middle platform 2 is from near to far;

[0065] Specifically, Figure 6As shown, the first annular platform 201 is not provided with holes 401, the second annular platform 202 is provided with four holes 401, the third annular platform 203 is provided with eight holes 401, the fourth annular platform 204 is provided with twelve holes 401, and the fifth annular platform 205 is provided with sixteen holes 401;

[0066] Furthermore, if Figure 6 As shown, all holes 401 form a fan-shaped hole group 4, and the hole group 4 is rotationally symmetrically distributed with the center of the annular platform 21 as the rotation center; the holes 401 in the hole group 4 are distributed along the radial direction of the middle platform 2 to form a plurality of hole lines 41;

[0067] Furthermore, the holes 401 are radially distributed along the inscribed circle of the annular platform 21, and the number of holes 401 on the same radial line periodically decreases linearly from more to less or increases linearly from less to more along the circumferential direction; and the number and corresponding distribution positions of the holes 401 in each hole group 4 are the same.

[0068] In this embodiment, there are four groups of hole groups 4, and the number of holes 401 in the hole line 41 in each group decreases from four to one in the clockwise direction, and decreases by one each time; so that each time the support column assembly 3 is rotated by a certain preset angle, the annular table 21 can be raised from the inside to the outside in sequence, and raised to be flush with the central table 101, or the annular table 21 can be lowered from the outside to the inside in sequence, so that the annular table 21 falls on the table surface of the bottom table 1.

[0069] The support columns 311 of the support column assembly 3 are arranged corresponding to the hole group 4 to form a support column group 31;

[0070] like Figure 2 As shown, the support column assembly 3 is arranged in the bottom platform 1, as shown in FIG. Figure 8 As shown, the support column assembly 3 includes a plurality of lifting support column groups 31; a plurality of support columns 311 in each lifting support column group 31 are distributed radially; the number of support columns 311 in each lifting support column group 31 is the same as the number of the annular platform 21;

[0071] Specifically, in this embodiment, four lifting support column groups 31 are arranged on the support column assembly 3 , and five support columns 311 in each lifting support column group 31 are distributed in the radial direction.

[0072] The position distribution of the multiple support columns 311 on the lifting support column group 31 matches the position distribution of the holes 401 on the hole line 41, so that when the support column assembly 3 rotates to different angles in sequence, different annular platforms 21 are lifted in sequence by the support columns 311.

[0073] Furthermore, the tops of all the support columns 311 are flush, all the annular platforms 21 have the same height, the height of the central platform 101 is higher than the height of the annular platform 21, and the rising height of the support columns 311 is not higher than the depth of the receiving hole 312;

[0074] The tops of the support columns 311 are flush, and all the annular platforms 21 are designed to have the same height, so that all the annular platforms 21 have the same height after rising, and the platform surface formed together is relatively flat.

[0075] Further, preferably, the circumferential angles between two adjacent lifting support column groups 31 are the same, and the circumferential angles between two adjacent hole groups 4 are the same.

[0076] Furthermore, if Figure 1 , Figure 2 As shown, the support column assembly 3 further includes a curve rotation mechanism 301 and a linear transmission mechanism 302; the curve rotation mechanism 301 is used to drive the support column 311 to rotate, and the linear transmission mechanism 302 is used to drive the support column 311 to vertically lift;

[0077] Optionally, the curved rotation mechanism 301 includes a rotary motor; the linear transmission mechanism 302 includes a cylinder or a telescopic hydraulic cylinder or an electric push rod.

[0078] Specifically, in this embodiment, the curve rotation mechanism 301 includes a rotary motor, and the rotation of the rotary motor drives the rotation of the support column assembly 3, so that the corresponding relationship between the support column 311 of the support column assembly 3 and the hole 401 of each annular platform 21 can be changed, so that the support column 311 moves out of the range of the hole 401 of the annular platform 21 to be lifted;

[0079] Driven by the linear transmission mechanism 302, the support column assembly 3 moves up and down in the vertical direction, acting on the annular table body 21 of the middle table body 2, providing power for vertical movement, and then supporting the middle table body 2. The power of the vertical movement of the linear transmission mechanism 302 is transmitted to the middle table body 2 through the support column assembly 3, lifting the middle table body 2 to the same height as the central table body 101, thereby changing the size of the experimental table surface.

[0080] Furthermore, slots 312 matching the lifting support column group 31 are provided on the bottom platform 1, and the angles between the slots 312 are the same. They are distributed radially along the bottom platform 1, and the support columns 311 of the support column assembly 3 can pass through the slots 312 and contact the middle platform 2.

[0081] Furthermore, preferably, a positioning component is also provided on the bottom platform 1, and the positioning component is used to locate the initial position of the annular platform 21;

[0082] The positioning assembly includes a pin 51 or a pin hole 52 arranged on the surface of the bottom platform 1, and a pin hole 52 or a pin 51 arranged on each annular platform 21 corresponding to the pin 51 or the pin hole 52, and the pin 51 or the pin hole 52 is symmetrically distributed along the diameter of the bottom platform 1;

[0083] Specifically, a pin 51 for positioning is provided on the bottom platform 1, and the pin 51 is orderly distributed along the diameter of the bottom platform 1. Each annular platform 21 is provided with a pin hole 52 corresponding to the pin 51, so that precise positioning can be achieved. The pin hole 52 is in the shape of a circular hole. Two pin holes 52 are provided at the bottom of each annular platform 21, and the two pin holes 52 are symmetrically arranged on the diameter of the middle platform 2. The pin 51 and the pin hole 52 are used to locate the initial position of the middle platform 2.

[0084] The initial position of the middle platform 2 is positioned by the positioning pin 51 and the pin hole 52 , so that the initial corresponding relationship between all the support columns 311 of the support column assembly 3 and the holes 401 of the middle platform 2 can be fixed.

[0085] The design of the pin 51 and the pin hole 52 can reduce the labor of calibrating the initial position during use, and can also obtain higher calibration accuracy. It is easy to install, can obtain better results, and optimize the experimental experience of the experimenter.

[0086] like Figure 4 , Figure 5 As shown, when the table area needs to be expanded, the rotating motor is started as needed to support the column assembly 3 to rotate, and each time the angle is rotated 18° in the clockwise direction, the first annular table 201 can be supported by rotating 18° in the clockwise direction from the initial position; the first annular table 201 and the second annular table 202 can be supported by rotating 18° in the clockwise direction again or rotating 36° in the clockwise direction from the initial position; the first annular table 201 and the second annular table 202 can be supported by rotating 18° in the clockwise direction again or rotating 54° in the clockwise direction from the initial position. 01, the second annular platform 202 and the third annular platform 203; rotate 18° clockwise again or rotate 72° clockwise from the initial position to support the first annular platform 201, the second annular platform 202, the third annular platform 203 and the fourth annular platform 204; and so on, when rotating 90° clockwise from the initial position, the first annular platform 201, the second annular platform 202, the third annular platform 203, the fourth annular platform 204 and the fifth annular platform 205 can be supported at the same time;

[0087] Since the present embodiment is provided with 5 layers of annular platforms 21, the number of rotations is set to 5 times, and each layer of annular platforms 21 is correspondingly provided with four support columns 311, so the angle of each rotation is equally divided into 360 / 4 / 5=18 degrees;

[0088] Similarly, if the number of layers of the annular platform 21 is N, the number of rotations is N, and the number of support columns 311 corresponding to each layer of the annular platform 21 is M, the rotation angle can be equally divided into 360 / M / N degrees;

[0089] Of course, the angle of each rotation does not necessarily need to be designed to be equally divided, as long as the support column 311 can support the corresponding tabletop as needed.

[0090] According to the annular platform 21 to be lifted, the rotary motor is used to rotate the annular platform 21 to a desired angle, and then the cylinder is started. The rotary motor above the cylinder is pushed, and the support column assembly 3 is also forced to move upward. The annular platform 21 to be lifted is pushed by the support column assembly 3 to be flush with the central platform 101, and together they form a table top.

[0091] When the platform area needs to be reduced, the switch is pressed to retract the push rod of the cylinder, and the annular platform 21 descends along with the support column assembly 3 and falls on the support surface of the bottom platform 1. At this time, the platform 2 is rotated counterclockwise by a corresponding angle, and the support column assembly 3 is used to lift the middle platform 2, so that the test platform area can be reduced;

[0092] For example, when it is necessary to change the area of ​​the middle platform 2 from the largest to the second largest, press the switch to retract the push rod of the cylinder, and the annular platform 21 will drop and fall on the supporting surface of the bottom platform 1. At this time, use the rotary motor to rotate 18° counterclockwise, and start the cylinder to push the push rod again, so that the four annular platforms 21 can be lifted from the center of the circle to the outside, and the area of ​​the test table is changed from the largest area state to the second largest area state.

[0093] Example 3

[0094] A test bench with a variable tabletop range, comprising: a bottom table body 1, a hollow middle table body 2 composed of a plurality of groups of concentrically arranged annular table bodies 21, a central table body 101, and a rotatable and liftable support column assembly 3;

[0095] Specifically, in this embodiment, Fig. 9 , Fig.10 , Fig.11 As shown, the platform surfaces of the bottom platform 1, the middle platform 2, the center platform 101, and the annular platform 21 are all regular octagons;

[0096] The middle platform 2 includes a first annular platform 201, a second annular platform 202, a third annular platform 203, and a fourth annular platform 204. The annular platforms 21 are arranged concentrically and are sequentially sleeved from small to large and from inside to outside.

[0097] Each annular platform 21 has a hole 401 at the bottom. The first layer of annular platform 21 closest to the central platform 101 has no hole 401 at the bottom. All holes 401 are arranged in a regular cycle.

[0098] Specifically, the first annular platform 201 is provided with eight holes 401, the second annular platform 202 is provided with sixteen holes 401, the third annular platform 203 is provided with twenty-four holes 401, and the fourth annular platform 204 is provided with thirty-two holes 401;

[0099] The support column assembly 3 is provided with support columns 311, and the support columns 311 are arranged corresponding to the position distribution of the holes 401; the support column assembly 3 is used to support different annular platforms 21 from the inside to the outside in sequence through rotation and lifting, so that they are flush with the table surface of the central table body 101, thereby changing the range of the experimental table surface;

[0100] The other contents are the same as those in Example 1, and the principles are similar, so they will not be described in detail in this example.

[0101] Those skilled in the art will appreciate that the accompanying drawings are merely schematic diagrams of a preferred implementation scenario, and the modules or processes in the accompanying drawings are not necessarily required for implementing the present invention.

[0102] Those skilled in the art will appreciate that the modules in the device in the implementation scenario can be distributed in the device in the implementation scenario according to the implementation scenario description, or can be changed accordingly and located in one or more devices different from the implementation scenario. The modules in the above implementation scenario can be combined into one module, or can be further split into multiple sub-modules.

[0103] The above serial numbers of the present invention are only for description and do not represent the advantages or disadvantages of the implementation scenarios.

[0104] The above disclosure is only a few specific implementation scenarios of the present invention, but the present invention is not limited thereto, and any changes that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A test bench with a variable table range, characterized in that: include: An annular platform, a central platform, a bottom platform and a support column assembly; The plurality of annular platforms are nested in sequence from inside to outside and from small to large. The first layer of annular platforms is connected to the central platform. The table tops of the annular platforms and the table tops of the central platforms together form a laboratory table. The bottom platform is provided under the central platform. The support column assembly is provided in the bottom platform. A support column is provided on the top of the support column assembly. By lifting and lowering the support column, one or more of the annular platforms are supported, so that the table surface of the supported annular platform is flush with the table surface of the central platform, thereby changing the range of the experimental table surface.

2. A test bench with a variable tabletop range according to claim 1, characterized in that: Each of the annular platforms has a hole at the bottom, and the support column assembly is correspondingly provided with the support column; The number of holes of each annular platform increases linearly from the inside to the outside, and all the holes form a plurality of fan-shaped hole groups, and the hole groups are rotationally symmetrically distributed with the center of the annular platform as the rotation center; The support columns of the support column assembly are provided with support column groups corresponding to the hole groups, and the number of support columns in each support column group is the same as the number of the annular platform body; The support columns are arranged corresponding to the position distribution of the holes; the support columns support one or more of the annular platforms through rotation and lifting to change the range of the experimental table.

3. A test bench with a variable tabletop range according to claim 2, characterized in that: The holes are radially distributed along the inscribed circle of the annular platform, and the number of the holes on the same radial line periodically decreases linearly from more to less or increases linearly from less to more along the circumferential direction.

4. The test bench with a variable tabletop range according to claim 2, characterized in that: The circumferential angles between two adjacent support column groups are the same, and the circumferential angles between two adjacent hole groups are the same.

5. A test bench with a variable tabletop range according to claim 1 or 2, characterized in that: The heights of the annular platforms are the same, and the tops of the support columns are flush and the same.

6. The test bench with a variable tabletop range according to claim 2, characterized in that: The height of the central platform is higher than that of the annular platform, and the rising height of the support column is not higher than the depth of the hole.

7. The test bench with a variable tabletop range according to claim 1, characterized in that: The support column assembly includes a power device, and the power device includes a curved rotation mechanism and a linear transmission mechanism; The curved rotation mechanism is used to drive the support column to rotate, and the linear transmission mechanism is used to drive the support column to vertically lift.

8. The test bench with a variable tabletop range according to claim 1, characterized in that: The table top of the bottom table is also provided with slots, which are evenly distributed along the circumference of the table top of the bottom table. The slots are used for the support columns to pass through the table top of the bottom table.

9. The test bench with a variable tabletop range according to claim 7, characterized in that: The curve rotation mechanism includes a rotary motor; the linear transmission mechanism includes a cylinder or a telescopic hydraulic cylinder or an electric push rod.

10. The test bench with a variable tabletop range according to claim 1, characterized in that: The bottom platform is also provided with a positioning component, and the positioning component is used to locate the initial position of the annular platform; The positioning assembly includes a pin / pin hole arranged on the surface of the bottom platform, and a pin hole / pin arranged on each of the annular platforms corresponding to the pin / pin hole, and the pin / pin hole is symmetrically distributed along the diameter of the inscribed circle of the bottom platform.

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